code: def test_image_attributes(self):
      self.fig.add_layout_image(name="my name", x=1, y=2)
      self.fig.update_layout_images(opacity=0.1)
  
imports: import types
  from unittest import TestCase
  import plotly.graph_objs
  from plotly.subplots import make_subplots
  import pytest
label_desc: Use image node_id 15 for calling the TestSelectForEachUpdateAnnotations obj's underlying member method code with example usage: obj.test_image_attributes() without return types